Method for improving bitumen recovery from oil sands by production of surfactants from bitumen asphaltenes
CA 2629039 C · Owner: Ozum, Baki · Inventors: Ozum, Baki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a method for increasing the efficiency of bitumen recovery from oil sands bitumen asphaltenes naturally present in the oil sands ore are treated with selected chemical agents to produce surfactants which reduce surface and interfacial tensions and promote the production of bitumen-water emulsions thus facilitating the extraction and recovery of bitumen for use in producing synthetic crude oil. The agents react with the asphaltenes by oxidation sulfonation, sulfoxidation, or sulfomethylation reactions or by a combination , of such reactions. These reactions may be initiated by adding selected agents into water-based oil sand slurries in process vessels or in pipelines. Alternatively, …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed December 9, 2005 and granted September 4, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 9, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.